Petroleum Refinery Engineering MCQs

Question 1

The catalytic cracking of heavier petroleum fraction is done to produce mainly

Accepted Answer

Diesel oil

Answer

Gasoline

Answer

Asphalt

Answer

Tar

Question 2

Which of the following has the lowest cetane number?

Accepted Answer

Aromatics

Answer

I-paraffins

Answer

Naphthene

Answer

Olefins

Question 3

Which of the following constituents present in petroleum is responsible for ash formation?

Accepted Answer

Organometallic compounds

Answer

Nitrogen compounds

Answer

Sulphur compounds

Answer

Oxygen compounds

Question 4

C n H 2n is the general formula for

Accepted Answer

Both A & B

Answer

Olefins

Answer

Naphthenes

Answer

Neither A nor B

Question 5

Petroleum

Accepted Answer

Is optically active

Answer

Constitutes mainly of olefins

Answer

Does not contain asphalt

Answer

Does not contain aromatics

Question 6

Which of the following is not an important property of fuel oil/furnace oil?

Accepted Answer

Aniline point

Answer

Sulphur content

Answer

Viscosity

Answer

Flash point

Question 7

Choose the correct statement.

Accepted Answer

Branched chain paraffins have higher octane number than straight chain paraffins with same number of carbon atoms

Answer

Octane number of i-octane is zero

Answer

Octane number of paraffins increases with increasing number of carbon atoms

Answer

The aromatics have lower octane number than naphthenes with same number of carbon atoms

Question 8

Fuel oil is subjected to visbreaking to reduce its

Accepted Answer

All of the above

Answer

Pour point

Answer

Viscosity

Answer

Pressure drop on pumping

Question 9

The main aim of cracking is to produce

Accepted Answer

Gasoline

Answer

Lube oil

Answer

Petrolatum

Answer

Coke